#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

#define tombol1   12
#define tombol2   11

unsigned int menu,stat1,stat2;

void setup()
{
  Serial.begin(115200);

  lcd.init();           
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("Hello, world!");
  lcd.setCursor(0,1);
  lcd.print("Ywrobot Arduino!");

  pinMode(tombol1, INPUT_PULLUP);
  pinMode(tombol2, INPUT_PULLUP);
}

void loop()
{
  stat1 = digitalRead(tombol1);
  stat2 = digitalRead(tombol2);

  mainmenu();

  if(stat1 == 0)
  {
    menu++;
  }
  if(stat2 == 0)
  {
    menu--;
  }
  delay(100);
  Serial.println(menu);
}

void mainmenu()
{
  
}